I don't have any formed idea of how to counter "archer" numbers in Strategvs, but those you presented ain't the most diplomatic/rational decision at all.
Players aren't forced to play as archers or crossbowers, they chose it because they enjoy it, I doubt anyone is forced into playing ranged.
So:
> 100% accuracy, fair enough, untouched.
> 200% speed bonus (or any speed bonus at all), it's terrible for the obvious reasons. You'll probably see only squads of hornbows stunlocking everything to death, ultimate support in the right hands.
> 50% damage.... and 10% damage buff if you stand closer together in a big archer/xbower group. This will only make archers die so easily and be so exposed, killing the point of flanking properly. Maybe it's the intention. I can imagine 5 xbowers reloading together, sitting ducks.
The main problem of strategus class balance has been from what I've experience in every battle, the insane amount of defenders being able to wield very accurately any sort of crossbow with no actual penalty, hitting for huge values of damage with pierce damage. So on the AI sieges or defense sieges with lots of crossbows in stack, you'd see most of the players using them, due to how insanely effective it is in big numbers.
My main character is an archer (with PS) at the moment, and never had a problem with opposing team archers in Strategus. Never in all my 24 generations of different speccs. Then on the other hand I understand how hard it must be to fight against players like Bagge, Hetman, Nebun, Kunio, or even the good ol' me.
Honestly, if those changes come true, strategus will become another borefest of melee hormones going berserk at each other, pointless competition, and Strategus is the mode I've always found most appealing in cRPG, as I know for other ranged players for sure.
Just how I feel reading the op.
cheers.